In 1992, Krabbe along with team mates Silke Moller and Grit Breuer tested positive for the stimulant clenbuterol.[2][3][4] All three athletes were suspended for one year by the German Athletics Federation, but the International Athletics Association extended this to two years. Krabbe sued the IAAF and received damages (1.2 million DM), while Breuer did not and was able to compete again after the ban. The suspension kept Krabbe from competing in the 1992 Summer Olympics, and effectively ended her athletic career.